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1977 Swede 55

Laurence Harbor, NJ
$55,000 USD

Rosina is a beautiful example of the Knud Reimers designed Swede 55. Conceived as a fast ocean cruising boat, Rosina has outstanding speed in most conditions and is particularly fast and stable on a reach or downwind regularly seeing double digit speeds. Don’t be scared of the overall length Rosina is well behaved and loads are lighter than most big boats. She turns on a dime and is very responsive with a well balanced helm. Rosina is also a great cruiser the long overhangs provide ample storage space and the below decks layout is well thought out. The Swede 55 is one of the few classic fiberglass sailboats with a PHRF rating under 100. You get the elegance of a swept shear and long overhangs, but the performance of a much more modern boat.

Rosina has received extensive updating throughout the years and has spent 11 years in fresh water. Her beautifully updated mast, larger sail plan, mainsail track system and sail handling controls separate her from other Swede 55s.

Boat Name: Rosina

Builder: Fiskastra Designer: Knud Reimers Flag of Registry: United States Keel: Fin

LOA: 53 ft 0 in Beam: 9 ft 7 in LWL: 39 ft 0 in Maximum Draft: 6 ft 5 in Displacement: 16534 lbs Dry Load Ballast: 6283 lbs


Doyles Dacron, Main Sail

Doyles Mylar Kevlar, Upgraded Main Sail

Doyles Dacron, 155% Genoa Main Head Sail

Doyles Dacron, Working Jib

Ullman, LRG 3/4 oz Spinnaker

ZSails, 1/2 oz Spinnaker

North, 1.75 oz Spinnaker


Steering wheel

Rod Rigged Primary shrouds and Head stay

Fore Spar ultra telescoping Spinnaker pole w/ mast storage mount

Tapered, Anodized Aluminum Mast w/ double spreader

Boom Vang Preventer under Main Sail

Aluminum Sail track runs length of boat

Full double life lines

Running back stays

All halyards run aft to cockpit

Lewmar 55 Primary winches, self tailing

Lewmar 44 Secondary winches, self tailing

Lewmar 40 Halyard winches, self tailing

Lewmar 44 Aft 3 speed winches , self tailing

All Harken racing blocks throughout

Engine Total Power: 23 HP

Engine: Engine Brand: Volvo Year Built: 1977 Engine Model: MDC11C/110S Engine Type: Inboard/Outboard Engine/Fuel Type: Diesel Location: Center Propeller: Folding propeller Drive Type: Sail drive Engine Power: 23 HP

Fresh Water Tanks: 2 (60 Gallons) Fuel Tanks: 1 (18 Gallons)

Accommodations Number of single berths: 3 Number of double berths: 2 Number of cabins: 3 Number of heads: 1

Electronics: Depth sounder Log-speedometer Wind speed and direction Plotter Autopilot Compass GPS VHF

Inside Equipment: Electric bilge pump Oven Marine head

Outside Equipment/Extras:

Lofrans’ anchor windlass with local controls

Teak cockpit Solar panel Cockpit table

Mainsail cover, dodger and Bimini

Please contact DAVID RENI at 732-566-5961 or dreni@raritanmarina.com

This listing is presented by SailingAnarchy.com. Visit their website for more information or to contact the seller.

View on SailingAnarchy.com


Knud Reimers
# Built


Length Overall
52 11 / 16.2 m
Waterline Length
39 0 / 11.9 m
9 6 / 2.9 m
6 5 / 2 m
16,640 lb / 7,548 kg
9,040 lb / 4,099 kg (Lead)

Rig and Sails

Reported Sail Area
694′² / 64.5 m²
Total Sail Area
694′² / 64.4 m²
Sail Area
399′² / 37.1 m²
49 10 / 15.2 m
16 0 / 4.9 m
Air Draft
Sail Area
294′² / 27.4 m²
44 7 / 13.6 m
13 2 / 4 m
Forestay Length
46 6 / 14.2 m

Auxilary Power

Fuel Type
Fuel Capacity
Engine Hours


Water Capacity
Holding Tank Capacity


Hull Speed
11.5 kn
Classic: 8.37 kn

Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.


Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

11.49 knots
Classic formula: 8.37 knots
Sail Area/Displacement
16-20: good performance

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.


SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
<16: under powered
16-20: good performance
>20: high performance
>40: stiffer, more powerful

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.


Ballast / Displacement * 100

<40: less stiff, less powerful
>40: stiffer, more powerful
100-200: light

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.


D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
20-30: coastal cruiser

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.


Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
<2.0: better suited for ocean passages

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.


CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
<2: better suited for ocean passages
>2: better suited for coastal cruising


This design has a fairly convoluted history. A number of builders? Later boats were delivered with various updated rudder, keel and rig combinations.



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